Prestashop Cleaner

Module Prestashop Cleaner does not work neither in version 1.5.4.1. Module display error [PrestaShop] Fatal error in module DBPD:Call to a member function rowCount () on a non-object. I can not find a solution anywhere. I use a version of PrestaShop 1.5.4.1, default theme. Is there any solution?

Array ( [DELETE FROM `ps_customization` WHERE `id_cart` NOT IN (SELECT `id_cart` FROM `ps_cart`)] => 1 [DELETE FROM `ps_customized_data` WHERE `id_customization` NOT IN (SELECT `id_customization` FROM `ps_customization`)] => 2 )

After installing of Prestashop Cleaner Module in Back office, My Module list is not opening/ showing up. On Clicking Module at Backoffice, it just simply redirects to our home page. So I am not even able to install/ uninstall/ edit any module from my backoffice.